@esotericsoftware/spine-core
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The official Spine Runtimes for the web.
58 lines • 8.34 kB
JavaScript
/******************************************************************************
* Spine Runtimes License Agreement
* Last updated April 5, 2025. Replaces all prior versions.
*
* Copyright (c) 2013-2025, Esoteric Software LLC
*
* Integration of the Spine Runtimes into software or otherwise creating
* derivative works of the Spine Runtimes is permitted under the terms and
* conditions of Section 2 of the Spine Editor License Agreement:
* http://esotericsoftware.com/spine-editor-license
*
* Otherwise, it is permitted to integrate the Spine Runtimes into software
* or otherwise create derivative works of the Spine Runtimes (collectively,
* "Products"), provided that each user of the Products must obtain their own
* Spine Editor license and redistribution of the Products in any form must
* include this license and copyright notice.
*
* THE SPINE RUNTIMES ARE PROVIDED BY ESOTERIC SOFTWARE LLC "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES,
* BUSINESS INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THE SPINE RUNTIMES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*****************************************************************************/
import { BonePose } from "./BonePose.js";
import { PosedActive } from "./PosedActive.js";
/** A node in a skeleton's hierarchy with a transform that affects its children and their attachments. A bone has a number of
* poses:
* - {@link data}: The setup pose.
* - {@link pose}: The unconstrained local pose. Set by animations and application code.
* - {@link appliedPose}: The local pose to use for rendering. Possibly modified by constraints.
* - World transform: the local pose combined with the parent world transform. Computed on a pose by
* {@link BonePose.updateWorldTransform} and {@link Skeleton.updateWorldTransform}.
*/
export class Bone extends PosedActive {
/** The parent bone, or null if this is the root bone. */
parent = null;
/** The immediate children of this bone. */
children = [];
sorted = false;
constructor(data, parent) {
super(data, new BonePose(), new BonePose());
this.parent = parent;
this.appliedPose.bone = this;
this.constrainedPose.bone = this;
}
/** Copy constructor. Does not copy the {@link children} bones. */
copy(parent) {
const copy = new Bone(this.data, parent);
copy.pose.set(this.pose);
return copy;
}
}
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